ME 132 Discussion 1

ME 132 Discussion 1 - ME 132 Discussion 1 Jan 29-30 GSI...

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ME 132 Discussion 1 Jan 29-30
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GSI information Mike Morimoto [email protected] OH: 136 Hesse M 10-12 W 11-12:30
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Introduction to control Main objective: try to force some variable to behave like you want it to. Engineering: controlled variable is a physical variable. Examples: Position Angular velocity Blood glucose concentration
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Engineering: systems we are trying to control are actual physical systems. Examples: Spring-mass-damper Motor Insulin/glucose metabolism These physical systems can be manipulated by inputs , and an output is (usually) the controlled variable. “Plant,” or physical process input output u(t) y(t)
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Question: how do we design u(t) such that y(t) y des (t) ? Answer: use either open or closed loop control. Open loop: relies on calibration, no feedback. Closed loop: relies on measurements of controlled variable (feedback). “Plant,” or physical process input output u(t) y(t)
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Typical feedback system: d(t) is a disturbance (unknown).
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